The QCD critical point explored by heavy ion collisions is expected to belong to the 3D Ising universality class [1]}, [2]}, [3]}, [4]}. Different thermodynamical systems in the same universality class can not be compared quantitatively, their qualitative characteristics should be similar, however. We expect that the nonequilibrium evolution of the 3D Ising model may have some guidance for heavy ion collisions.
